body {
  background-color: #eee;
  font-family: Helvetica, Arial, sans-serif;
}

header {
  color: #fff;
  background-color: #0072b0;
  border-radius: .5em;
}

main {
  display: block;
}

.main {
  background-color: #fff;
  border-radius: .5em;
}

.sidebar {
  padding: 1.5em;
  background-color: #fff;
  border-radius: .5em;
}